package file;

import java.io.File;

public class MkDirDemo {
    public static void main(String[] args) {
        //  File dir = new File("./a/b/c");
        File dir = new File("./demo");
        if (dir.exists()) {
            System.out.println("该目录已存在");
        } else {
            dir.mkdirs();
            System.out.println("目录创建完毕");
        }
    }
}
